Vertical angles are formed when two lines intersect, and they are opposite angles that share a vertex. In this case, since m∠2 = 148°, we need to find the angle that is opposite to it.
Looking at the angles given:
- m∠2 = 148°
- m∠4 also equals 148°
Thus, the angle that is a vertical angle with ∠2 is ∠4.